How to Grow Cucumberleaf Sunflower

Overview

Cucumberleaf sunflower, or Helianthus debilis, is an annual, a perennial forb or an herb. It has green foliage and yellow flowers. The plants are typically 6 inches high and grow most actively in the spring and summer, with continuous blooming for two months. Cucumberleaf sunflower needs sunlight and doesn't tolerate shade well. The herb also needs regular watering. The cucumberleaf sunflower is not usually available at nurseries, plant dealers or garden stores, but you can buy the seeds.

Step 1

Pick a spot that is in the sun, as the sunflowers will grow facing the sunlight. Prepare the soil bed in the spring by removing any debris or weeds with hand tools or a rake.

Step 2

Add compost to make the soil medium to course in texture. Mix the compost in with the soil so it's evenly distributed. Sunflowers need rich soil to support their root base.

Step 3

Check the pH level of the soil. Make sure it's between 5.2 and 7.2 pH.

Step 4

Plant the seeds about a 1/4 inch below the soil surface, evenly spaced out. Cover the seeds with a light layer of soil, and water thoroughly.

Step 5

Apply a dose of fertilizer to the sunflowers when you fertilize the rest of the garden. Add extra potassium and phosphorus to the roots when the flowers start to develop. This will encourage bigger blooms.